Can The HTC Sensation Have The Footprints App On It? & Also Would I Be Able To Use My HTC HD2 Custom Aps On It?

The Sensation is an Android phone. As far as I know, all HTC Android phones include the Footprints app. As far as whether you can use your HD2 custom apps on it, probably yes - this phone will run any Android apps that you can download. The only problem might be if there's an HTC-only app (like Footprints) that was included on the HD2 but not the Sensation - but probably all of those HTC-only apps are still on the Sensation.